Operation Guide 2886
3
GPS
The letters “GPS” stand for “Global
Positioning System”, which was developed
and is operated by the United States
Department of Defense.
A GPS device picks up radio signals from three or more of the system’s
satellites orbiting about 21,000 kilometers above the Earth, and then
applies the principles of triangulation to calculate a current position
based on the distance between each satellite and the GPS device, and
based on each satellite’s orbit.
Each satellite constantly transmits time information required for GPS
measurement, a one-second pulse (Universal Coordinated Time), the
satellite’s orbit information (ephemeris data), information about the orbits
of all the other satellites (almanac data), and other information.
Your watch analyzes the data it receives from the GPS satellites to
determine your current location, and calculates the distance you have
covered and your bearing.
●
Important!
•
The signals of the GPS system are controlled by the Tracking and
Control Center (TACC) of the United States, and are subject to
intentional precision degradation and signal termination at its
discretion.
•
This watch depends on the reception of radio waves from artificial
satellites, so certain conditions can interfere with its operation.
•
The following conditions can cause radio interference and make
reception impossible.
●
Among buildings or
underground
●
Surrounded by
skyscrapers
●
Inside a
motor
vehicle
●
In wooded areas
●
Near
high-voltage
lines
●
When the watch is
under your sleeve
Under
ground
If the date is greater than
±
512 weeks off when performing a
GPS measurement, following auto time correction the date will
become
±
1024 weeks from the actual date. In this case, refer to
“Configuring the Watch’s Basic Settings” and adjust the date.
■
GPS Auto Time Calibration by GPS
When the watch performs a GPS measurement, it also receives time
data and adjusts its time and date setting automatically.
•
If you cannot receive a GPS signal for some reason, periodically
adjust the time and date setting manually using the procedure.
To perform GPS auto time calibration
1. In the Timekeeping Mode, hold down the
E
button for about one second.
•
This will start GPS measurement,
which is indicated by a flashing GPS
indicator ( ).
•
To stop GPS measurement, press the
E
button again.
•
A GPS measurement operation
normally takes one or two minutes, but
can take as long as five minutes. The
message “TIME OUT” will appear and
measurement will stop if measurement
is not possible.
•
Summer time (DST) settings are not
configured automatically. See “To
configure basic settings” for more
information.
In order to facilitate GPS reception, set the current date manually
after you first purchase the watch.
•
You also can speed up GPS reception by setting the month,
day, and approximate current time manually. See “To configure
basic settings” for information about manual time and date
settings.
Level
During Measurement
No Measurement
Number of Satellites
GPS Indicator
SEARCH Screen
Modes
Press the
C
button to cycle between modes.
•
The watch will return to the Timekeeping Mode automatically if you do
not perform any button operation in the Guide Mode, Recall Mode, or
Alarm Mode.
Year
Mode Name
Day of the Week
Month
Day
PM Indicator
(A for AM)
Hour : Minute Second
Use the mode to view the current time and date.
Use this mode to set the
alarm time, and to turn the
alarm and hourly time signal
on or off.
Button
Button
Button
Button
Button
Timekeeping Mode
Mode Name
This mode shows the current
time in 141 cities in 38 time
zones.
World Time Mode
Alarm Mode
Mode Name
Mode Name
This mode provides a
countdown timer.
Use this mode to recall
stopwatch records.
Mode Name
Mode Name
This mode measures
distance, speed, and elapsed
time.
This mode tells you the
distance and direction from
your current location (BASE
POINT) to your destination
(GOAL POINT).
Recall Mode
Timer Mode
Guide Mode
Stopwatch Mode
